65 lines
1.7 KiB
C#
65 lines
1.7 KiB
C#
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using Microsoft.AspNet.Routing;
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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namespace Microsoft.AspNet.Mvc
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{
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public class HttpMethodConstraint : IActionConstraint
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{
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private readonly IReadOnlyList<string> _methods;
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// Empty collection means any method will be accepted.
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public HttpMethodConstraint(IEnumerable<string> httpMethods)
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{
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if (httpMethods == null)
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{
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throw new ArgumentNullException("httpMethods");
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}
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var methods = new List<string>();
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foreach (var method in httpMethods)
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{
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if (string.IsNullOrEmpty(method))
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{
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throw new ArgumentException("httpMethod cannot be null or empty");
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}
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methods.Add(method);
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}
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_methods = new ReadOnlyCollection<string>(methods);
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}
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public IEnumerable<string> HttpMethods
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{
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get
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{
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return _methods;
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}
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}
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public bool Accept([NotNull] RouteContext context)
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{
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if (context == null)
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{
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throw new ArgumentNullException("context");
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}
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if (_methods.Count == 0)
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{
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return true;
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}
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var request = context.HttpContext.Request;
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return (HttpMethods.Any(m => m.Equals(request.Method, StringComparison.Ordinal)));
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}
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}
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}
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